Pipe Thread
Pipe Thread:
It provides mechanical connection and hydraulic seal between two piping material and NPT (American National Pipe Tapered Thread)
is considered as most suitable in the process industries however other threads of different standards are also available.
The male tapered and female tapered part of NPT is sealed with teflon tape.
Pipe threads are based on outside diameter O.D or on the basis of flow size. Let us consider an example what “¼ – 18 NPT” denotes,
it means a pipe thread with a nominal inside diameter of 1/4 inch and 18 threads to the inch, and it is made according to the
NPT standard. If “LH” is added in the above specification, it means the pipe has a left hand thread.